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From: "Jake Donham" <jake@donham.org>
To: "caml users" <caml-list@inria.fr>
Subject: camlp4 parser accepts more than its grammar?
Date: Thu, 26 Jun 2008 14:10:20 -0700	[thread overview]
Message-ID: <c7e4e9f0806261410n645217c1qb89ac81a531030e0@mail.gmail.com> (raw)

Hi list,

I expected the following program to fail with a parse error, but it
happily ignores the extra '+'. I would be grateful if someone could
point out what I'm doing wrong. Thanks,

Jake


open Camlp4.PreCast;;

let expr = Gram.Entry.mk "expr";;
let stmt = Gram.Entry.mk "stmt";;

EXTEND Gram
  expr: [[
    x = expr; "+"; y = expr -> x + y
  | x = INT -> int_of_string x
  ]];
  stmt:
  [[ e = expr; ";"; `EOI -> e ]];
END;;

prerr_endline (string_of_int (Gram.parse_string stmt Loc.ghost "2 + 1 + ;"))


             reply	other threads:[~2008-06-26 21:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-26 21:10 Jake Donham [this message]
2008-06-27  8:29 ` [Caml-list] " Nicolas Pouillard
2008-06-27  8:42   ` Till Varoquaux
2008-07-01  0:01     ` Arthur Chan
2008-07-01  7:02       ` blue storm

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